CVE-2026-35601

MEDIUM EPSS 9.5%
Published Apr 10, 20262mo ago · Modified Jun 17, 20261w ago
4.1 CVSS 3.1
Medium
Find Similar
Published Apr 10, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV output generator builds iCalendar VTODO entries via raw string concatenation without applying RFC 5545 TEXT value escaping. User-controlled task titles containing CRLF characters break the iCalendar property boundary, allowing injection of arbitrary iCalendar properties such as ATTACH, VALARM, or ORGANIZER. This vulnerability is fixed in 2.3.0.

CVSS Details

Base Score
4.1
Exploitability
2.3
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Changed
Confidentiality None
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
9.5% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-93

Affected Products 1

VendorProductVersionRange
vikunjavikunja* <2.3.0

References 3

  • github.com https://github.com/go-vikunja/vikunja/pull/2580
    Issue Tracking
  • github.com https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0
    Release Notes
  • github.com https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4r
    ExploitVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.